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Nucleic Acid-Backboned Chimeric Polymers with Designable Physics and Chemistry

Chinese Journal of Chemistry 2023年第8期41卷 951-957页

作者： Jiangming Wang Yuanchen Dong Huajie Liu Dongsheng Liu School of Chemical Science and Engineering Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education and Shanghai Research Institute for Intelligent Autonomous SystemsTongji UniversityShanghai200092 China CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsBeijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190 China Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing100084 China

Comprehensive Summary The chain effect of polymer is the kernel of the precise synthesis of complex polymer compounds and the development of polymer *** acids,a special type of polyester,can form supramolecular polymers via hydrogen bonds among corresponding *** focused on the precise control of polymer chains and proposed the concept of“nucleic acid-backboned chimeric polymers”(NCPs).There are three important elements of NCPs,namely nucleic acid backbone,side group and intra-/inter-chain weak *** this review,we expound how to realize the construction of intelligent DNA structures through the regulation of these three elements and the applications of NCPs in various fields.

关键词： Chimeric polymers Programmable polymers Kinetically interlocking Self-assembly DNA

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Cu_(3)P nanoparticles confined in nitrogen/phosphorus dual-doped porous carbon nanosheets for efficient potassium storage

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Journal of Energy Chemistry 2022年第3期31卷 339-347,I0009页

作者： Yuanxing Yun Baojuan Xi Yu Gu Fang Tian Weihua Chen Jinkui Feng Yitai Qian Shenglin Xiong Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringState Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100ShandongChina Key Laboratory of Material Processing and Mold of Ministry of Education Zhengzhou UniversityZhengzhou 450001HenanChina Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationSchool of Materials Science and EngineeringShandong UniversityJinan 250061ShandongChina

Immobilizing primary electroactive nanomaterials in porous carbon matrix is an effective approach for boosting the electrochemical performance of potassium-ion batteries (PIBs) because of the synergy among functional components. Herein, an integrated hybrid architecture composed of ultrathin Cu_(3)P nanoparticles (~20 nm) confined in porous carbon nanosheets (Cu_(3)P⊂NPCSs) as a new anode material for PIBs is synthesized through a rational self-designed self-templating strategy. Benefiting from the unique structural advantages including more active heterointerfacial sites, intimate and stable electrical contact, effectively relieved volume change, and rapid K^(+) ion migration, the Cu_(3)P⊂NPCSs indicate excellent potassium-storage performance involving high reversible capacity, exceptional rate capability, and cycling stability. Moreover, the strong adsorption of K^(+) ions and fast potassium-ion reaction kinetics in Cu_(3)P⊂NPCSs is verified by the theoretical calculation investigation. Noted, the intercalation mechanism of Cu_(3)P to store potassium ions is, for the first time, clearly confirmed during the electrochemical process by a series of advanced characterization techniques.

关键词： Cu_(3)P Potassium-ion batteries Nitrogen/phosphorus dual-doped porous carbon sheets Intercalation mechanism Heterointerface

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SEMG-Based Gesture Recognition in Multiple Scenarios Using a Phase Locked Value-Based Deep Learning Method

SEMG-Based Gesture Recognition in Multiple Scenarios Using a...

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2024 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2024

作者： Zhang, Xueze Wang, Minjie Chen, Zihua Wang, Lu Wang, Hongbo Kang, Xiaoyang Laboratory for Neural Interface and Brain Computer Interface Engineering Research Center of Ai & Robotics Ministry of Education Shanghai Engineering Research Center of Ai & Robotics Moe Frontiers Center for Brain Science State Key Laboratory of Medical Neurobiology Institute of Ai & Robotics Institude of Meta-Medical Academy for Engineering & Technology Fudan University Shanghai China

ISBN: (纸本)9798350386226

Surface electromyography (sEMG) signals-based gesture recognition method is widely employed in human-computer interaction task. In this paper, we proposed a phase locked value (PLV)-based feature extraction method for sEMG-based gesture recognition. We conducted validation experiments on public datasets by integrating the previous proposed gesture recognition algorithms, STCN-GR and ConSSL. PLV-STCN-GR and PLV-ConSSL were utilized to test the performance of proposed feature extraction method in intra-session, inter-session and inter-subject scenarios. In general, the proposed PLV-based sEMG decoding framework has achieved good recognition results on public datasets and demonstrated the possibility of its application in practical scenarios. © 2024 IEEE.

关键词： Deep learning

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Third-order nonlinear optical responses of CuO nanosheets for ultrafast pulse generation

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Journal of Materiomics 2022年第2期8卷 511-517页

作者： Li Dong Hongwei Chu Ying Li Shengzhi Zhao Dechun Li School of Information Science and Engineering Shandong UniversityQingdao266237China Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringJinan250100China

As a representative transition metal oxide,cupric oxide(CuO)has attracted a lot of interest in miscel-laneous *** the present work,the prominent third-order nonlinear optical(NLO)features of CuO nanosheets were demonstrated via the typical Z-scan technique at 1 m *** open-aperture(OA)Z-scan measurements at different intensities clearly showed that CuO nanosheets possessed the saturable ab-sorption(SA),reverse saturable absorption(RSA)and optical limiting *** closed-aperture(CA)Z-scan technology was implanted to investigate the nonlinear refractive index and the third-order nonlinear *** virtue of the strong nonlinear optical absorption properties of CuO nano-sheets,a stable all-solid-state mode-locked laser with the as-prepared CuO nanosheets as saturable absorber at 1.06 m m was realized for the first *** work confirmed that CuO nanosheets exhibited outstanding NLO properties,which might stimulate the development in ultrafast photonics and nonlinear optics.

关键词： Transition metal oxide Nonlinear saturable absorption Nonlinear susceptibility Saturable absorber Mode-locking

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Rationally designed hollow carbon nanospheres decorated with S,P co-doped NiSe_(2) nanoparticles for high-performance potassium-ion and lithium-ion batteries

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Journal of Energy Chemistry 2023年第3期78卷 401-411,I0011页

作者： Jiajia Ye Zizhong Chen Zhiqiang Zheng Zhanghua Fu Guanghao Gong Guang Xia Cheng Hu Shenzhen Research Institute of Shandong University Shenzhen 518057GuangdongChina Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061ShandongChina Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringState Key Laboratory of Crystal MaterialShandong UniversityJinan 250100ShandongChina i-Lab Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123JiangsuChina

Hollow nanostructures with external shells and inner voids have been proved to greatly shorten the transport distance of ions/electrons and buffer volume change,especially for the large-sized potassium-ions in secondary *** this work,hollow carbon(HC) nanospheres embedded with S,P co-doped NiSe_(2)nanoparticles are fabricated by "drop and dry" and "dissolving and precipitation" processes to form Ni(OH)2nanocrystals followed by annealing with S and P dopants to form *** resultant S,P-NiSe_(2)/HC composite exhibits excellent cyclic performance with 131.6 mA h g^(-1)at1000 mA g^(-1)after 3000 cycles for K^(+)storage and a capacity of 417.1 mA h g^(-1)at 1000 mA g^(-1)after1000 cycles for Li^(+)storage.K-ion full cells are assembled and deliver superior cycling stability with a ca pacity of 72.5 mA h g^(-1)at 200 mA g^(-1)after 500 *** hollow carbon shell with excellent electrical conductivity effectively promotes the transporta tion and tolerates large volume variation for both K^(+)and Li^(+).Density functional theory calculations confirm that the S and P co-doping NiSe_(2) enables stronger adsorption of K^(+)ions and higher electrical conductivity that contributes to the improved electrochemical performance.

关键词： S,P co-doping NiSe_(2)nanoparticles Hollow carbon nanospheres Potassium-ion batteries Lithium-ion batteries

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Single-Molecule Confinement Induced Intrinsic Multi-Electron Redox-Activity to Enhance Supercapacitor Performance

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Energy & Environmental Materials 2023年第4期6卷 227-238页

作者： Su Yang Meiling Wang Yong Zhang Pinyi He Wenhua Cong Chongji Wang Qiankun Yang Xuguang Liu Tian Wang Xianming Zhang Jiadong Zhou College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement(Ministry of Education) Beijing Key Lab of Nanophotonics&Ultrafine Optoelectronic Systemsand School of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Materials Science and engineering Central South UniversityChangsha 410083China Department of Chemistry National University of Singapore3 Science Drive 3117543Singapore Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education (Taiyuan University of Technology)Taiyuan 030024China

Aggregation of polyoxometalates(POM)is largely responsible for the reduced performance of POM-based energy-storage *** address this challenge,here,the precise confinement of single Keggin-type POM molecule in a porous carbon(PC)of unimodal super-micropore(micro-PC)is *** precise single-molecule confinement enables sufficient activity center exposure and maximum electron-transfer from micro-PC to POM,which well stabilizes the electron-accepting molecules and thoroughly activates its inherent multi-electron *** particular,the redox-activities and electron-accepting properties of the confined POM molecule are revealed to be super-micropore pore size-dependent by experiment and spectroscopy as well as theoretical ***,the molecularly dispersed POM molecules confined steadily in the“cage”of micro-PC exhibit unprecedented large-negative-potential stability and multiple-peak redox-activity at an ultra-low loading of~11.4 wt%.As a result,the fabricated solid-state supercapacitor achieves a remarkable areal capacitance,ultrahigh energy and power density of 443 mF cm^(-2),0.12 mWh cm^(-2)and 21.1 mW cm^(-2),*** work establishes a novel strategy for the precise confinement of single POM molecule,providing a versatile approach to inducing the intrinsic activity of POMs for advanced energy-storage systems.

关键词： intrinsic redox-activity polyoxometalates single-molecule confinement supercapacitor

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Dynamic Color Regulation of the Lycaenid Butterfly Wing Scales

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Journal of Bionic engineering 2024年第5期21卷 2395-2408页

作者： Mingxia Sun Weihao Meng Haiwei Yin Lingjie Fan Lei Shi Gregory S.Watson Jolanta A.Watson Jingxia Wang Lei Jiang Aiping Liang Tianjin Key Laboratory of Conservation and Utilization of Animal Diversity College of Life SciencesTianjin Normal UniversityTianjin300387China Laboratory of Bioinspired-Smart Interface Sciences Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190China Shanghai Ideaoptics Corporation Shanghai200433China Key Laboratory of Micro&Nano Photonic Structures(MOE)and Key Laboratory of Surface Physics Department of PhysicsFudan UniversityShanghai200433China School of Science Technology and EngineeringUniversity of the Sunshine CoastFraser Coast CampusHervey BayQLD4655Australia Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing100101China

Butterfly coloration originates from the finely structured scales grown on the underlying wing *** researchers who study butterfly scales are focused on the static optic properties of cover scales,with few works referring to dynamic optical properties of the ***,the dynamic coloration effect of the multiple scales was studied based on the mea-surements of varying-angle reflection and the characterization of scale flexibility in two species of Lycaenid,Plebejus argyrognomon with violet wings and Polyommatus erotides with blue *** explored the angle-dependent color changeability and the color-mediating efficiency of wing *** was found that the three main kinds of flexible scales(cover,ground and androconia scales)were asynchronously bent during wing rotation,which caused the discoloration *** three layers of composite scales broaden the light signal when compared to the single scale,which may be of great significance to the recognition of ***,the androconia scales were shown to strongly contribute to the overall wing *** cover scale coloration was ascribed to the coherence scattering resulted from the short-range order at intermediate spatial frequencies from the 2D Fourier power *** findings are expected to deepen the understanding of the complex characteristics of biological coloration and to provide new inspirations for the fabrication of biomimetic flexible discoloration materials.

关键词： Butterfly scale Angle-dependent reflection Color-mediating efficiency Structural Color

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Bismuthene quantum dots integrated D-shaped fiber as saturable absorber for multi-type soliton fiber lasers

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Journal of Materiomics 2023年第1期9卷 183-190页

作者： Han Pan Hongwei Chu Ying Li Zhongben Pan Jia Zhao Shengzhi Zhao Weichun Huang Dechun Li School of Information Science and Engineering and Key Laboratory of Laser and Infrared System of Ministry of EducationShandong University72 Binhai RoadQingdao266237China Key Laboratory of Colloid and Interface Chemistry of State Education Ministry School of Chemistry and Chemical EngineeringShandong University27 Shanda South RoadJinan250100China School of Chemistry and Chemical Engineering Nantong University9 Seyuan RoadNantong226019China

In the present work,the uniformly sized bismuthene quantum dots(BiQDs)with an average diameter of 26 nm were fabricated via the solvothermal *** transferring the BiQDs onto the plane of micro-machined D-shaped fiber(DSF),a new type of saturable absorber(SA)was successfully *** on the evanescent field effect of D-shaped fiber,the prepared SA exhibits excellent saturable absorption properties with the maximum modulation depth of 5.1%at around 1.5μ*** further investigate its potential applications in ultrafast photonics,we demonstrated passive mode-locking operation in the erbium-doped fiber laser(EDFL)with BiQDs/*** conventional soliton pulses with duration of 835 fs at the repetition rate of 9.23 MHz and dissipative soliton pulses with duration of 575 fs at the repetition rate of 7.83 MHz were generated *** addition,stable bound state of solitons with the pulse duration of 1.04 ps and sub-pulse time interval of 15.9 ps were also obtained based on the conventional soliton state by adjusting the pump power and polarization *** work reveals the great potential and capacity of BiQDs/DSF-SA in soliton mode-locking operations and promotes the explorative investigation of bismuth-based optoelectronic devices.

关键词： Bismuthene quantum dots Saturable absorber Soliton mode-locking Bound-state solitons Ultrafast photonics

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A novel strategy for promoting corrosion and wear resistance of Mg-Li alloys: Gradient eutectic high-entropy alloy coating induced by in-situ bidirectional diffusion

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Journal of Magnesium and Alloys 2023年第5期13卷 2267-2282页

作者： Wen, Xin Cui, Xiufang Liu, Yufei Zhang, Ye Tian, Haoliang Wan, Simin Jiang, Lipeng Jin, Guo Institute of Surface/Interface Science and Technology Key Laboratory of Superlight Material and Surface Technology of Ministry of Education College of Material Science and Chemical Engineering Harbin Engineering University 145 Nantong Ave Nangang District Heilongjiang Harbin150001 China Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material Beijing Aero Engine Corporation of China Beijing Institute of Aeronautical Materials Beijing100095 China

In this work, a novel surface strengthening strategy for Mg-Li alloys was proposed, called cold spraying assisted high-speed laser cladding. CuAl9 aluminum bronze coating was firstly deposited on Mg-Li alloy by cold spraying, and then CoCrFe0.5Ni1.5Mo0.1Nb0.68 eutectic high-entropy alloy (EHEA) coating was prepared on the CuAl9 coating utilizing high-speed laser cladding. A gradient coating consisted of in-situ transition region and EHEA layer formed by bidirectional diffusion. The in-situ transition region was composed of β-Li, Cu2Mg and Cu3Al2 phases. TEM analysis indicated that Cu2Mg and Cu3Al2 phases were well matched with the β-Li matrix phase. The EHEA coating had a nano-lamellar eutectic microstructure with relatively small lamellar-spacing (SHE) was 1345 mVSHE higher than that of Mg-Li alloy (-1369 mVSHE), while the corrosion current density of the EHEA coating (3.13 × 10−7 A·cm−2) was almost three orders of magnitude lower than that of Mg-Li alloy (1.25 × 10−4 A·cm−2). The wear rate of Mg-Li alloy (1.11 × 10−3 mm3/N·m) was about 36 times higher than that of the EHEA coating (3.05 × 10−5 mm3/N·m). © 2023

关键词： Binary alloys

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Recent advances of amorphous-phase-engineered metal-based catalysts for boosted electrocatalysis

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Journal of Materials science & Technology 2022年第32期127卷 1-18页

作者： Jiakang Tian Yongqing Shen Peizhi Liu Haixia Zhang Bingshe Xu Yanhui Song Jianguo Liang Junjie Guo Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Materials Institute of Atomic and Molecular Science Shaanxi University of Science and TechnologyXi’an 710021China College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan 030024China

Amorphous metal-based catalysts(AMCs)have sparked intense research interests in the field of electrocatalysis elicited by their hallmark features such as unlimited volume and morphology,manipulated electronic structures,enriched defects,and unsaturated surface atom ***,the manipulation of the amorphous phase in metal-based catalysts is so far impractical,and thus their electrocatalytic mechanism yet remains *** this review,the latest advances in AMCs are systematically reviewed,covering amorphous-phase engineering strategy,structure manipulation,and amorphization of various material categories for ***,a series of applications of AMCs in electrocatalysis for the oxygen reduction reaction(ORR),hydrogen evolution reaction(HER),and oxygen evolution reaction(OER)are summarized based on the classification criteria of ***,we put forward current challenges that have not yet been clarified in the field of AMCs,and propose possible solutions,particularly from the perspective of the evolution of electron *** is expected to promote the understanding of the amorphization-catalysis relationship and provide a guideline for designing high-performance electrocatalysts.

关键词： Amorphous metal-based catalysts Electrocatalysis Electron microscopy interface engineering Surface engineering Defect engineering Strain engineering

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